foo.cc: In function 'int hps(int, char, int)':
foo.cc:17:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     if (i >= Fj.size()){
      |         ~~^~~~~~~~~~~~
foo.cc:13:34: warning: control reaches end of non-void function [-Wreturn-type]
   13 |     vector<int> tmp = {k, pose, i};
      |                                  ^

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